docs: def delete(self, name):
          """
          Delete the specified entry if it exists.
          """
          if isinstance(name, (list, tuple)):
              for xx in name:
                  self.delete(xx)
          else:
              if name in self._record_map:
                  del self._record_map[name]
                  self._record_list = [
                      r for r in self._record_list if r['name'] != name]